HYB514171BJ-50- SIEMENS [Siemens Semiconductor Group], HYB514171BJ-50- Datasheet - Page 22

• Manufacturer Part Number: HYB514171BJ-50-
• Description: 256k x 16-Bit Dynamic RAM
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

CAS-Before-RAS Refresh Counter Test Cycle
Semiconductor Group
Read Cycle
RAS
UCAS
LCAS
Address
WE
OE
I/O
(Inputs)
I/O
(Outputs)
Write Cycle
WE
OE
I/O
(Inputs)
I/O
(Outputs)
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
IH
IL
IH
IL
IH
IL
IH
IL
IH
IL
IH
IL
OH
OL
IH
IL
IH
IL
IH
IL
OH
OL
t
WRP
t
WRP
"H" or "L"
t
CSR
t
WRH
t
t
CHR
WRH
t
RCS
t
t
WCS
DZC
t
CP
t
t
ASC
22
t
DS
DZO
t
Column
RAS
Data IN
t
t
t
AA
CLZ
CAH
Hi
t
t
CAC
DH
Z
t
WCH
t
t
t
OEA
t
RAL
CWL
RWL
t
t
CAS
RSH
Data OUT
HYB 514171BJ-50/-60
t
OEZ
t
ODD
t
OFF
t
RRH
256k
t
RP
t
t
ASR
RCH
t
CDD
Row
SPT03055
16 DRAM
1998-10-01